Strathord was a 195 GRT steam fishing vessel completed in 1906 by Hall, Russell & Co. Ltd. for Aberdeen Steam Trawling And Fishing Co. From 1920 she was owned by Raincliffe Steam Trawling Co. and registered at Scarborough. On 23 February 1920 she was seen to be blown up by a mine by the crew of another fishing vessel.

There were no survivors

Strombus was a 6,030 GRT steam tanker completed in 1900 by Armstrong, Whitworth & Co. Ltd. for Shell Transport & Trading Co. Ltd. From 1907 she was owned by Anglo-Saxon Petroleum Co. Ltd. She was damaged on 4 June 1918 by torpedo fired by German submarine UC-20 at position 33° 10' N, 15° 58' E. She was en route from Marseille to Port Said with a cargo of boxwood, war material and empty drums. I have not been able to ascertain the nature of the attack, nor the cause of death of Mr. White in 1916. The vessel made it to report and was repaired. Later she was converted into a whaling factory ship and was beached after striking a mine in 1940.

Stryn was a 2,045 GRT steam cargo ship completed in 1901 by Bonn & Mees of Rotterdam for NV Mij ss Louise as Louise. From 1918 she was in the hands of the British Government Shipping Controller and managed by Constantine, Donking & Co. She was sunk on 10 June 1918 by torpedo fired by German submarine UB-80 approximately 5 nautical miles East of Berry Head. She was en route from Rouen to Barry in ballast.

Stuart Prince was a 3,597 GRT steam cargo ship completed in 1899 by T. Turnbull & Son for Pyman Bros. At the time of her loss she was owned by Prince Line, Ltd. and managed by Furness, Withy & Co. Ltd. She was sunk on 22 March 1917 by torpedo fired by German submarine U-66 at position 55° 28' N, 11° 20' W - approximately 85 nautical miles North by West of Broad Haven, County Mayo. She was en route from Manchester to Alexandria with a general cargo.

Subadar was a 4,911 GRT steam cargo ship completed in 1912 by Chas. Connell & Co. Ltd. for Asiatic Steam Navigation Co. Ltd. She was sunk on 27 July 1918 by torpedo fired by German submarine U-43 at position 40° 26' N, 10° 39' W - approximately 112 nautical miles North by West of Cape da Roca, Portugal. She was en route from London to Port Said with a general cargo.

Summerfield was a 687 GRT steam cargo ship completed in 1913 by Dublin Dockyard Co. Ltd. for Zillah Shipping & Carrying Co. Ltd. and managed by W. A. Savage. She sank on 13 August 1915 after striking a mine laid by German submarine UC-5 approximately 2 nautical miles East of Lowestoft. She was en route from Yarmouth to Douglas, Isle of Man with a cargo of wooden huts.

Suncloud was a 213 GRT steam trawler completed in 1912 by Cook, Welton & Gemmell for The Grimsby and North Sea Steam Trawling Co. Ltd. and registered at Grimsby as GY.753. She was reported missing after being last seen on 24 June 1919 and is presumed to have struck a mine in the North Sea.

There were no survivors

Sunniside was a 447 GRT compound-engined cargo ship completed in 1905 by Goole Shipbuilding & Repackaging Co. Ltd. for Wear Steam Shipping Co. Ltd. From 1916 she was owned by Tower Steam Shipping Co. Ltd. and managed by Woods, Tylor & Brown. She sank on 9 November 1916 after striking a mine laid by German submarine UC-4 approximately 4 nautical miles East-North-East of Southwold. She was en route from Hull to Rotterdam with a general cargo.

Sunniva was a 1,913 GRT steam cargo ship completed in 1917 by J. Crown & Sons Ltd. for E. R. Newbigin. She was sunk on 28 June 1918 by torpedo fired by German submarine UC-17 approximately 4 nautical miles East of Sunderland. She was en route from London to the Tyne in ballast.

Susie was a 41 GRT sailing ketch (fishing boat) completed in 1898 by H. Fellows & Co. Ltd. for Herbert John Sayers and registered at Scarborough as SH.197. She was sunk on 17 August 1917 by gunfire from German submarine UC-16 approximately 10 nautical miles North-East by East of Scarborough.